Web 应用程序的 ServletContext 用作容器实例的绑定目标，以使得容器无需多次进行实例化即可供后续使用。
The Web application’s ServletContext is used as a bind target for the container instance, to make it available for subsequent use without having to instantiate it multiple times.
能多次使用的容器既抵抗了过度包装，又不用牺牲其便利性。
We can fight over-packaging without sacrificing convenience by using reusable containers.
截至灌封根据你的容器的大小是萌发使用，您可能需要最多一锅幼苗一次或多次，然后才将其最终容器或花园里移栽。
Depending on the size of container you are using for germination, you may need to up-pot the seedlings one or more times before transplanting into their final container or the garden.
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